Dr. Tanja Bosak
Associate Professor of GeobiologyContact: tbosak[at]mit.edu Bosak CV
I am studying mechanisms associated with the burial and sequestration of organic carbon within marine sediments and their impact on the global carbon cycle. In particular, I am interested in studying how the physical protection of organic matter is enhanced or reduced by different iron concentrations. Currently my experiments involve studying clay precipitation mediated by heterogeneous cultures of marine cyanobacteria.
PhD Student in Geobiology
Through organic geochemical and micropaleontological analysis, I study the information that is preserved in sedimentary archives. As part of the Bosak laboratory, I continue to characterize body fossils from the Neoproterozoic interglacial period to better understand early eukaryotic radiation and possible connections with the dramatic environmental change associated with the Sturtian low-latitude glaciation.
PhD Student in Geobiology
My current research focuses on microbe-mineral interactions. I employ a variety of microscopy techniques and chemical analyses to investigate the formation of minerals around microbial filaments. My goals are to explore the mechanisms of microbial mineral precipitation, in order to better understand the fossilization processes and to determine what depositional environments are most conducive to fossilization.
Ana De Santiago Torio
I am passionate about microbiology. I’m currently interested in understanding how sulfate-reducing bacteria respond to variable environmental conditions, such as nutrient limitation, and how those changes affect their metabolism. Ultimately, this might give us an insight into how sediments are influenced by the microbes living in them.
Postdoctoral Research Associate
As part of my interest in global cycles, I am studying microbial sulfate reduction (MSR) which is the primary mediator of the sulfur biogeochemical cycle. Sulfate reducing microbes have versatile metabolisms and habitats and have played a key role in the marine cycles of carbon and sulfur from the early geological time onward. I am investigating microbial metabolic pathways and growth conditions and their effect on the sulfur isotopic fractionation with the aim of understanding both the geologic isotopic record and the metabolic pathway of these microbes.
I am also interested in, and have studied carbonate mineralogy and clumped isotopes as a tool to reconstruct past climates. I am interested in both the development of this geochemical proxy and its application to natural materials and the terrestrial environment. My work has focused on Glacial-Inter Glacial climate change in the Levant and East Africa.
Friends of the Lab
PhD Candidate, University of Cambridge.
Dr. Lilliam Casillas
Principal Investigator, Biology Department, University of Puerto Rico- Humacao.
Dr. Gill Geesey
Professor, Department of Microbiology, Montana State University
Graduate Student, Department of Marine Earth and Atmospheric Sciences, North Carolina State University
Dr. Dan Lahr
Assistant Professor, University of São Paulo, Brazil
Dr. Francis Macdonald
Associate Professor, Harvard University
Graduate Student, Department of Biochemistry, Duke University
Dr. Laura Meredith
NSF-AGS Postdoctoral Fellow, Stanford University
Dr. Kristen Miller
Postdoctoral Researcher, MIT
Dr. Sara Pruss
Associate Professor, Smith College.
Dr. Florence Schubotz
Postdoctoral Researcher, MARUM/University of Bremen
PhD student at MIT
Dr. Alexander J. Evans
now a postdoctoral fellow at Columbia University – Lamont-Doherty Earth Observatory.
Dr. Biqing Liang
now at Academia Sinica in Taiwan.
Dr. Giulio Mariotti
currently an assistant professor at Louisiana State University.
Dr. Alexander Petroff
now a postdoctoral fellow at Rockefeller University.
Dr. Min Sub Sim
now at Agouron Postdoctoral Fellow at California Institute of Technology.
Dr. Stefanie Templer
currently in Emmi, Switzerland.
pursuing a project to cycle the silk road: www.cyclingsilk.com
Former undergraduate students: Joan Chen, Rachel Harris, Diana LaScala-Gruenewald, Anastasia Maheras, Deepa, Rao, Kristen Whaley, Jose-Luis Lugo (U Puerto Rico), Kevin Gildea